Pengayaan Larutan Penyangga Pertemuan 1

Quiz
•
Chemistry
•
11th Grade
•
Hard
INDAH LESTARI
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
Sistem penyangga yang ada dalam cairan tubuh manusia adalah pasangan H2CO3/HCO3- dan H2PO4- dan HPO42-
BENAR
SALAH
2.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
Prinsip kerja larutan penyangga didasarkan atas kesetimbangan komponen asam dan basanya.
BENAR
SALAH
3.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
Kemampuan larutan penyangga menahan pH bergantung pada jumlah mol komponen penyangga dan atau perbandingan mol komponen penyangga.
BENAR
SALAH
4.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
Bila 0,15 mol asam asetat (CH3COOH, Ka = 2 x 10-5) dan 0,1 mol NaOH dilarutkan dalam air sehingga diperoleh larutan penyangga dengan volum 1 liter, maka pH larutan penyangga tersebut adalah ....
4
5
6
5 - log 2
5 - log 3
5.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
Campuran larutan penyangga dengan pH = 5 dapat dibuat dengan mencampurkan .... (Ka HCOOH = 10-5; Kb NH3 = 10-5)
10 mL HCOOH 0,1 M + 5 mL HCOONa 0,1 M
10 mL HCOOH 0,1 M + 5 mL NaOH 0,1 M
10 mL HCOOH 0,1 M + 10 mL NaOH 0,1 M
10 mL NH3 0,1 M + 10 mL NH4Cl 0,1 M
10 mL NH3 0,1 M + 5 mL HCl 0,1 M
6.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
Pada sistem larutan penyangga mengandung komponen asam yang berfungsi untuk mengatasi kenaikan pH dan komponen basa yang berfungsi untuk mengatasi penurunan pH.
BENAR
SALAH
7.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
Suatu campuran 500 mL Na asetat 0,1 M dan 500 mL asam asetat 0,1 M yang mempunyai pH = 5 sebesar, maka harga Ka dari campuran tersebut adalah ....
1.10-1
1.10-2,5
1.10-5
1.10-10
1.105
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